US 8,540,957 B2 · Method for preparing microtubular halloysite nanopowders

Abstract

The present invention provides a method for preparing microtubular halloysite nanopowders by cutting halloysite nanotubes at a high pressure, microtubular halloysite nanopowders prepared by the method, and a cosmetic composition comprising the microtubular halloysite nanopowders. According to the method of the present invention, it is possible to prepare the halloysite nanopowders with a tubular shape using natural halloysite and effectively select a halloysite nanopowder having a desired shape. The microtubular halloysite nanopowders can be used in many industrial fields and used as a container or a carrier for nanoparticles or organic materials such as drugs, air fresheners, cosmetics, agricultural chemical materials, etc.

Claims8

Dependent claims

A method for preparing a microtubular halloysite nanopowder, comprising cutting a halloysite nanotube at 15,000 to 25,000 psi pressure.

Dependencies are inferred from the claim text.

Facts

Application

12/954,878Filed 28 Nov 2010

Priority

KR 10-2010-010565828 Oct 2010

Published

US 2012/0107214 A13 May 2012

Granted

24 Sep 2013

Term ends

Not estimatedThe source records don’t support an estimate.

Classification13 codes

C01B 33/26
Silicates: aluminium-containing silicates , i.e. silico-aluminates
A61K 8/0245
Containing particulates characterized by their shape and/or structure: specific shapes or structures not provided for by any of the groups of…
A61K 8/26
Containing inorganic ingredients: aluminium; Compounds thereof
A61Q 19/00
Preparations for care of the skin

Method for preparing microtubular halloysite nanopowders

Life of this patent

Method for preparing microtubular halloysite nanopowders

Life of this patent

Abstract

Claims8